I am doing my 50 hrs service myself. I am having some issues with the hst filter. I have kioti brand filter but it seems to be leaking just a bit. My question is when I removed the old filter, there seems to be a magnetic washer that slides around left on the tractor. I tried to remove it but it won't, it just slides all over the place. I have never seen anything like this before. I even searched everywhere but there is no mention of this magnetic piece. What do I do here?